Can or jar top cover



(Mode1.)

A. L. MITCH-ELL, CAN 0R JA-R Tor COVER.

No. 395,289. Patented Dec 25', 1888.

INVENTOR $6 m ATTORNEY N. Patna PlmXo-Lilhugnphur, Washingtun, n a

IUNTTED STATES PATENT @EETQE.

ADOLII-I L. MITCHELL, OF BROOKLYN, NEIV YORK.

CAN OR JAR TOP COVER.

SPECIFICATION forming part of Letters Patent No. 395,289, dated December25, 1888. Application filed April 16, 1888. Serial No. 270,750- (Model)To all whom it may concern:

Be it known that I, ADOLPH L. MITCHELL, of Brooklyn, county of Kings,and State of New York, have invented certain new and useful Improvementsin Can or Jar Top Covers, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings, andto the letters of reference marked thereon.

My invention consists of an improved contrivance for a packing cover forcans, jars, bottles, and other like articles, by which the mouth of thecan, jar, or other like article i may be more readily sealed or packedhermetically when closed than others now in use, and may likewise becontinuously or repeat edly used to better advantage, said contrivancebeing essentially a packing-disk of elastic material fitted movably inretaining-grooves in the lower side of the cover, so that it closes themouth of the can, jar, or other article when the cover closes, togetherwith the cover so fitted with the packing and with its fastenings to thecan-top, that it is made to wedge the packing tight by a slight lateralshift after being closed on the mouth, all as follows, referring to theaccompanying drawings, in which- Figure 1 is a sectional elevation of acantop with my improved cover, said cover being closed. Fig. 2 is a sideelevation of the same with the cover shifted preparatory to releasingthe packing for opening the mouth, and showing the cover partly raisedin dotted lines. Fig. 3 is a transverse section of the cover on line a;of Fig. 1; and Fig. & is a sectional elevation of a small can, alsofitted with my improved cover. Fig. 5 is a sectional elevation of thecan 011 the line 00 0c, in Fig. 4c.

The cover a carries a packing-disk or other v suitably-shaped piece, b,of elastic material,

fitted adj ustably to it in grooves c, or it may be any other improvedmeans of holding it so that it may shift in the cover, or the cover.

may shift along the packing a short distance after closing down 011 themouth of the top d of the can or other article. Said cover is pivoted invertically-inclined slots e of the cantop f, or by such slots in itself011 a fixed pivot,

g, of the can-top, and has spurs 11 at its opposite end, which engagewith inclines j of the can-top at the free end, so that after closingthe cover it may then be shifted along the inclines and along thepacking, whereby the inclines draw or wedge the cover and packing downsecurely and hermetically tight on the mouth, and hold the samepermanently until the cover is shifted laterally and upwardly along theinclines again for releasing the packing and opening the cover.

It will be seen that the cover is alike held or forced downat the fourcorners in such manner as to insure substantially uniform effect allround for making the packing tight at all points.

The packing is designed to be so fitted in the grooves c that it will beretained by friction anywhere that it may be left, but so that it willnot obstruct the shifting of the cover. This insures the return of thepacking to the mouth of the can when the cover is closed in. the samerelation thereto that it left said mouth when opened.

The grooves in the cover for retaining the packing may be formed in anyapproved way, as by casting integral retaining lugs or flanges with thecover, as I have represented them in the drawings, or they may be bentinward from the lower edge of the cover, or be soldered on or otherwiseattached, as preferred.

The vessels which I have represented are such as are usually made ofmetal whereon the tops, also made of metal, are usually soldered to theneck of the can. In the application of the invention to bottles andglass or earthen jars the top will probably be fa tened with cement.

\Vhat I claim, and desire to secure by Letters Patent, is i 1. Theimproved hermetically-sealing cantop comprising the laterally-shifting cinclined fastening devices wedging or binding said laterally-shiftingcover on the cantop, and the interposed packing of elastic materialfixed movably in retaining-grooves in the lower side of the cover,substantially as described.

2. The improved hermetically-sealing can- In testimony that I claim theforegoing I top comprising the laterally-shifting pivoted have hereuntoset my hand in the presence of cover, inclined fastening devices wedgingor two Witnesses.

binding said laterally-shifting cover on the ADOLPH L. MITCHELL. 5can-top, and the interposed packing of elastic Witnesses:

material fixed mcvably in the cover, substan- W. J. MORGAN,

tially as described. GEO. T. J AMIESON.

